OMEGA 2520 Exploded diagram BrandOMEGACaliber2520Size8 3/4FunctionSC-D(3)-AUTVersionHands0.70x1.20x0.20Stem= 2000-1 ETAStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)No. 2539XMainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecial154000ETA2000-18 3/40.70x1.20x0.20SC-D(3)-AUT WatchpartsPart NocaliberdescriptionoriginalArtno.2272000-1Sweep second wheelH1= 4239200022720004012000-1Winding stem9200040120007712000-1Mainspring AUT sliding attachemnet820253901481BReduction wheel AUT= 7259650725148114882000-1Pawel winding wheel9200148820002576= 2000-1Date jumper920025762000